Summary

Adobe has released security updates for Adobe Flash Player for Windows, Macintosh, Linux and Chrome OS. These updates address critical vulnerabilities in Adobe Flash Player 28.0.0.161 and earlier versions. Successful exploitation could lead to arbitrary code execution in the context of the current user.

Affected Product Versions

Product

Version

Platform

Adobe Flash Player Desktop Runtime

28.0.0.161 and earlier versions

Windows, Macintosh

Adobe Flash Player for Google Chrome

28.0.0.161 and earlier versions

Windows, Macintosh, Linux and Chrome OS

Adobe Flash Player for Microsoft Edge and Internet Explorer 11

28.0.0.161 and earlier versions

Windows 10 and 8.1

Adobe Flash Player Desktop Runtime

28.0.0.161 and earlier versions

Linux

To verify the version of Adobe Flash Player installed on your system, access the About Flash Player page, or right- click on content running in Flash Player and select "About Adobe (or Macromedia) Flash Player" from the menu. If you use multiple browsers, perform the check for each browser you have installed on your system.

Solution

Adobe categorizes these updates with the following priority ratings and recommends users update their installation to the latest version:

Adobe recommends users of the Adobe Flash Player Desktop Runtime for Windows, Macintosh and Linux update to Adobe Flash Player 29.0.0.113 via the update mechanism within the product [1] or by visiting the Adobe Flash Player Download Center.

Adobe Flash Player installed with Google Chrome will be automatically updated to the latest Google Chrome version, which will include Adobe Flash Player 29.0.0.113 for Windows, Macintosh, Linux and Chrome OS.

Adobe Flash Player installed with Microsoft Edge and Internet Explorer 11 for Windows 10 and 8.1 will be automatically updated to the latest version, which will include Adobe Flash Player 29.0.0.113.

[1] Users who have selected the option to 'Allow Adobe to install updates' will receive the update automatically. Users who do not have the 'Allow Adobe to install updates' option enabled can install the update via the update mechanism within the product when prompted.

Vulnerability details

Vulnerability Category

Vulnerability Impact

Severity

CVE Number

Use After Free

Remote Code Execution

Critical

CVE-2018-4919

Type Confusion

Remote Code Execution

Critical

CVE-2018-4920

Acknowledgments

Adobe would like to thank the following individuals and organizations for reporting this issue and for working with Adobe to help protect our customers:

Yuki Chen of Qihoo 360 Vulcan Team working with the Chromium Vulnerability Rewards Program (CVE-2018-4919 and CVE-2018-4920)